Two birds, one stone: long-wavelength carbon dots enable ratiometric detection of ciprofloxacin and Co2+ for smartphone, logic gate, and imaging applications.

Long-wavelength ratiometric fluorescent carbon dots for the detection of ciprofloxacin (CIP) and cobalt ion (Co2+) are reported. The carbon dots (D-CDs), which exhibit outstanding dual emission at 445 nm and 662 nm, are synthesized via a one-pot hydr…

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